Air Curtains are suitable for commercial / industrial / retail or domestic premises - their primary function is to blow a constant stream of air at an open door, keeping your cool air in and insects out. The benefit being your air conditioner will perform better, thereby energy costs are reduced. Great for use in commercial shops and restaurants. Qualtex has been supplying these Air Curtains for many years. Please Click on pictures below to see details and specifications for each size available.